题目

两种气态烃的混合气体共1mol，在空气中燃烧得到1.5molCO２和2molH2O关于该混合气体的说法正确的是 A．一定含有甲烷，不含乙烷 B．一定含乙烷，不含甲烷 C．一定是甲烷和乙烯的混合气体 D．一定含甲烷，但不含乙烯 答案：A用所给词的适当形式填空。【1】How many______ (university) are there in Shanghai?【2】Remember______ (visit) the Great Wall when you’re in Beijing.【3】She is as___________(old) as Mary.【4】It’s taller than many other _____________(building) in Shenzhen.【5】Please be______________(quiet). I am telephoning.【6】Bob is __________ (young) than Fred but taller than Fred.【7】Lily sings__________ (well) than Lucy.【8】John ran more__________ (slow) than the others.【9】Going to school by taxi is the ___________(expensive)and the most comfortable.【10】I ‘d like __________(go) to the stadium with you.